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Catheter for even distribution of therapeutic fluids

  • US 5,021,044 A
  • Filed: 01/30/1989
  • Issued: 06/04/1991
  • Est. Priority Date: 01/30/1989
  • Status: Expired due to Term
First Claim
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1. A multilumen catheter having an operative distal portion for the uniform delivery of therapeutic fluid to a location within a patient'"'"'s vascular system, comprising:

  • a) an elongated tubular body having proximal and distal ends, a first longitudinally extendinginner lumen with an axial opening in the distal end of the tubular body which is adapted to receive a guidewire and a sidewall which defines at least in part an additional longitudinally extending inner lumen adapted to receive therapeutic fluid;

    b) a plurality of longitudinally spaced fluid passageways which extend radially through the sidewall of the elongated tubular body in the operative distal portion of the catheter from the additional inner lumen to the exterior of the tubular body and which are adapted to direct therapeutic fluid from the additional inner lumen to the exterior of the tubular body, the transverse cross-sectional area of the passageways and the spacing therebetween being controlled to provide a flow discharge area per unit length of the operative distal portion of the catheter which increases in the distal direction to provide a uniform flow of therapeutic fluid to the exterior of the tubular member; and

    c) means at the proximal end of the tubular member to direct treatment fluid to the additional lumen adapted to receive said fluid.

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